The influence of different amount of SiO2 powder on the mechanical properties of cement-quartz composite cementitious material was discussed through the measurement of the compressive strength of the paste with the water/binder ratio of 0.5 and 0.2 where the SiO2 powder with different proportion to replace the Portland cement(PC). The compressive strength test shows that adding SiO2 powder to the concrete with low water-binder ratio can reduce the use of cement.

Abstract
 1. Introduction
 2. Materials and methods
  2.1 Paste constituents
  2.2 Paste mix proportion and specimen preparation
 3. Results and discussion
 4. Conclusions
 Reference

• 임윤생(강원대학교, 건축재료및시공연구실) | Lin, Runsheng
• 왕소용(강원대학교, 건축공학과) | Wang, Xiaoyong 교신저자